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Willy Snyder
PO Box 2732
Pocatello, ID 83206
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Your low wall will have the older black powder era firing pin size. The ones I looked at have been .125 but I have read claims that the early used even larger firing pins??? With the .125" and pistol primers I would not go over 25K in a Hi-Wall or...

One area of smokeless powder development I would like to learn more about is the bulk smokeless powders used in a one to one volumetric replacement for Blackpowder used for shotshells. I don't know if it was used in rifle, handgun or muzzleloaders...

The reason I asked is the Ruger 450 BM uses a five groove barrel.
https://ruger.com/products/americanRifleRanch/specSheets/16950.html
You normally can not use a standard mic or caliper to measure five grove bullets. Sometimes the land and...

If it was measured correctly??????????? it is out of SAAMI spec by .003" . That is a manufacturing defect and Ruger will replace it. If mine no way in h*** I would keep it.
Even with jacketed you still have .003" blow by.

Most of the hunting I do is with jacketed bullets. In 35 Cal and larger for deer I have also used cast a lot and they work very well within limitations. If I ever shoot a Bison it will be with cast. I have cast and shot over a 1/4 million bullets...

bluejays75 recommendation for 24 cent jacketed bullets would be my recommend starting point. Your 10 cent powder coated bullets maybe just fine but on the other hand they could be a source of various problems. There is a reason that high quality...

The Ruger American 450 BM uses a 16.12" cold-hammer-forged barrel. Tolerances on hammer-forged barrels tend to be very consistent. The SAAMI specs for the 450 BM is a .453 throat with a .442" bore and .450" groove diameter with a .002" plus...

I am odd man out here. Slugging barrels on older firearms is beneficial since the bores varied a lot. Today with modern manufacturing not so much. I always measure throats on a revolver. On newer rifles not so much. On new firearms I don't slug...

A squib that smoldered itself to fruition in a second or two. If I get "close" to the rifling with Hornady 250 SP I'm approx .3 an inch longer than the magazine on my 1909 DWM action with only 1/4 inch bullet in the neck.

Here's some pressure tested load data for the Swede useing 4350 and 4831 with the 129SST
https://goodsteelforum.com/forums/topic/129-sst-and-a-6-5x55-swede/
The Quickload pressure for Ramshot Magnum, 49.5gns, with a 140 Hornady SP at 22.5" is...